More Polygon Attributes

Today we added to our journal.  In fourth grade, we will define and identify 2D figures by their attributes.  We created two journal pages to help us organize the attributes. 

Measurement

OK, sorry this has taken so long.  Here it is, all my Measurement materials in one big post.  This will include our class foldables as well as anchor charts.  Sorry if anything is repeated.

Combinations

Points, Lines, and Angles

We started our Geometry unit today by creating our Point, Lines, and Angles foldable.  They will use this throughout the unit.  I explained to the students today, we will not measure angles in fourth grade.  But, we will have to identify angles within a 2D figure.  As well as identify parallel and perpendicular lines within 2D figures.

Circuit Poster

In the current unit we are studyting we have learned about all different types of energy, forces, and electrical circuits.  Sorry this is behind, but I am combining all the picture and what we have experimented in class.

Multiplication Songs

Often times it is difficult for students to recall their multiplication facts.  We encourage students to look at multiplication as patterns in numbers, or skip counting, and picture the multiplication chart in their head.  However, this concept is still difficult for some.  Song is often a very effective way of memorization.  I did not create these, but I do teach these in my class and have made posters to hang in the hall for the students to see when in line or at restroom break.  They are all set to familiar tunes, except maybe the eights.  Most kids don't know that song anymore.

MORE Division

Here are two posters that explains the process of division.  The students are free to choose which ever method they feel comfortable with.  We only encourage that they stick to one particular method.

Division

Sorry for the brief delay in division information.  The district has been updating the system and I was blocked from my blog site.  Above you will see how we relate multiplication to division.  They are opposite operations.  Division cannot be solved apart from multiplication.  Dividing is simply putting total amounts into groups equally, you may or may not have any left over.  In my previous post was showing the connection between the two operations.

Solutions

Okay, sorry it has been a while since I updated our exciting science experiments.  We created solutions.  First we determined that solutions dissolve much faster in hot water instead of cold water.  Then we tested a race to dissolve.  Which dissolves faster: sugar cube or granual?  Well, the granuals won.  The definition to solution is a mixture that can not easily be separated.  So, we tested that as well!  Can sugar and water be separated after it has been mixed together?  The result was YES!  We evaporated all the water and the sugar started to cook on the bottom of the beaker.  It was pretty cool!

3 Ways to Multiply

Today we practiced and practiced, and practiced some more.  Each student chose for themselves which of the three methods was easiest for them.  Check out our poster!

2 Digit x 2 Digit

There are several ways to find a product.  We learned 2 ways today; traditional and partial product. 
For the traditional method, I taught the students to say "OZTA" which stands for Ones, Zero, Tens, Add.  It helps them to not get lost in the process.
For partial product, the students write each number in expanded form and then multiply and then add the products.  They are taking the number apart and then putting it back together. 

Multiplying Across Zeros

We got this!  We completed a journal entry on how to multiply across zeros today.  It will be our easiest multiplication lesson ever.  We even got to prove it on a calculator!  Check it out! Find the basic factors and multiply then add the zeros to the end.

What do you want me to do???????

How do I know when to add or subtract?  Oh, those word problems.  Questions in Math have changed over the years.  No longer are there "Key Words" like altogther, total, each, separate, etc.  The key words have been removed and the students have to recognize real world situations.  Therefore, we made a poster to help identify situations.  When this happens in the story, we will . . . . .  Check out our poster!

Perimeter

Today we learned about perimeter.  Now, in third grade, the students did learn perimeter.  But it was simple, add all sides together.  In fourth grade the students will have to apply that knowledge.  Not only solve, but compare the perimeter of 2 figures.  Find the total of 2 or more figures' perimeter.  They may be given the total and asked to find the missing side.  Or, given the total and find the missing data of 2 sides.  Here is a poster we made in class today to help us remember.

Math Charts

Above are some charts that we made in class.  These posters hang on the wall as long as we are studying that particular concept.  I am posting them here in the case that your child finds them helpful while completing homework.